ATI TEAS 7
TEAS Practice Test Science Questions
Question 1 of 5
Which of the following lobes of the brain is primarily responsible for vision?
Correct Answer: B
Rationale: The correct answer is B: Occipital lobe. The occipital lobe is primarily responsible for processing visual information. It contains the primary visual cortex which helps in interpreting visual stimuli. The frontal lobe (A) is responsible for executive functions, the parietal lobe (C) for processing sensory information, and the temporal lobe (D) for auditory processing and memory. Therefore, the occipital lobe is the correct choice for vision processing.
Question 2 of 5
What is the main function of the respiratory system?
Correct Answer: B
Rationale: The correct answer is B: To exchange gases. The main function of the respiratory system is to facilitate the exchange of oxygen and carbon dioxide between the body and the external environment. This process occurs in the lungs through breathing, where oxygen is taken in and carbon dioxide is expelled. Absorbing nutrients (A) is the function of the digestive system, transporting oxygen (C) is part of the circulatory system's role, and regulating blood pressure (D) is primarily controlled by the cardiovascular system.
Question 3 of 5
Which of the following hormones regulates calcium levels in the blood?
Correct Answer: B
Rationale: The correct answer is B: Parathyroid hormone. PTH is produced by the parathyroid glands and plays a crucial role in regulating calcium levels in the blood. It increases calcium levels by stimulating the release of calcium from bones, enhancing calcium absorption in the intestines, and reducing calcium excretion in the kidneys. Insulin (A) regulates blood sugar levels, not calcium. Thyroid hormone (C) controls metabolism, not calcium levels. Glucagon (D) increases blood sugar levels, not calcium.
Question 4 of 5
Which of the following is a component of the immune system?
Correct Answer: B
Rationale: The correct answer is B: White blood cells. White blood cells are a crucial component of the immune system as they play a key role in defending the body against infections and diseases. They help identify and destroy pathogens, produce antibodies, and regulate the immune response. Red blood cells (A) are responsible for transporting oxygen, platelets (C) are involved in blood clotting, and plasma (D) is the liquid component of blood, but they are not directly involved in the immune response. Therefore, white blood cells are the correct choice for being a component of the immune system.
Question 5 of 5
What function do hydrophobic proteins often provide in the body?
Correct Answer: B
Rationale: Hydrophobic proteins often provide structural support in the body. This is because hydrophobic proteins have non-polar amino acids that interact with each other to form stable structures. These proteins are commonly found in cell membranes, connective tissues, and structural proteins like collagen. They are crucial for maintaining the shape and integrity of cells and tissues. Incorrect Choices: A: Digestive enzymes - Hydrophobic proteins are not commonly involved in digestive processes. C: Carry oxygen molecules - Oxygen-carrying proteins like hemoglobin are typically hydrophilic, not hydrophobic. D: Store energy - Energy storage is usually performed by molecules like carbohydrates and lipids, not hydrophobic proteins.
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